The pop star said she has trouble sticking to a healthy diet, but loves to exercise.

“Daily exercise is important for me both mentally and physically,” said Spears, who has her own perfume line.

Spears said it’s hard to stay thin after two pregnancies, but a low carb diet combined with fat-blasting cardio sessions keep her fit. Britney usually runs on the treadmill or the elliptical trainer at home.

Britney Spears is a former gymnast who does yoga regularly to calm her nerves. (Photo: Instagram, CelebrityHealthFitness)